evaluating the combined effect of thermoplastic polyurethane material in ice hockey goaltender helmets and cervical muscle strength in mitigating concussion risk during simulated horizontal head collisions
abstract
concussions, or mild traumatic brain injuries (mtbi), occur due to an impact on the head
and are the most common type of brain injury for goaltenders in the sport of ice hockey. the two
main techniques used to mitigate concussion risk for ice hockey goaltenders include improving
the impact absorption capabilities of the goaltender helmets and increasing the athlete’s cervical
muscle strength. based on these two strategies, this study examined the effect of thermoplastic
polyurethane (tpu) as a goaltender helmet liner material to mitigate concussion risk for
individuals with different neck strength levels during simulated horizontal head collisions.
to address the purpose of this study, static testing was conducted to examine the material
properties of the goaltender helmet liners, which was then used to identify the best tpu liner
design that improved the performance of the goaltender helmet technology. one particular tpu
liner design was found to weigh 2.7 times more on average than the standard liner; however, it
was capable of statically absorbing 10.8 times more energy per kilogram than the standard liner.
the researcher selected this tpu design and used it in repeated impact testing to further gauge
the performance of the tpu and standard liner materials compared to a bare head without liner
protection. repeated dynamic impact trials revealed that the tpu liner mitigated impacts
similarly to the standard liner, providing evidence of the tpu effectiveness as a possible helmet
liner. [...]